10211112221 has 16 divisors (see below), whose sum is σ = 10933339200. Its totient is φ = 9508752000.

The previous prime is 10211112211. The next prime is 10211112239. The reversal of 10211112221 is 12221111201.

It is a cyclic number.

It is not a de Polignac number, because 10211112221 - 2⁶ = 10211112157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10211112196 and 10211112205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211112211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247601 + ... + 285881.

It is an arithmetic number, because the mean of its divisors is an integer number (683333700).

Almost surely, 2^10211112221 is an apocalyptic number.

It is an amenable number.

10211112221 is a deficient number, since it is larger than the sum of its proper divisors (722226979).

10211112221 is a wasteful number, since it uses less digits than its factorization.

10211112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38540.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10211112221 its reverse (12221111201), we get a palindrome (22432223422).

The spelling of 10211112221 in words is "ten billion, two hundred eleven million, one hundred twelve thousand, two hundred twenty-one".